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© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

The integration of Internet of Things (IoT) devices in healthcare has enhanced medical efficiency but poses challenges such as data privacy risks and internal abuse. Traditional IoT data access frameworks suffer from centralization, limited scalability, and static permission controls. To address these issues, we propose MedAccessX, a blockchain-based access control framework combining attribute-based access control (ABAC) and role-based access control (RBAC). MedAccessX utilizes four types of smart contracts: a user management contract (UMC) for managing user operations, a medical data management contract (MDMC) for handling data, a policy contract (PC) for managing access rights, and an access control contract (ACC) for enforcing permissions and facilitating data sharing. Our evaluation, conducted on a private Ethereum blockchain network with multiple nodes, assesses security, deployment cost, gas consumption, throughput, and response time. Comparative analysis demonstrates that MedAccessX achieves lower deployment costs and higher throughput, outperforming existing solutions.

Details

Title
MedAccessX: A Blockchain-Enabled Dynamic Access Control Framework for IoMT Networks
Author
Shi, Guoyi 1   VIAFID ORCID Logo  ; Minfeng Qi 1   VIAFID ORCID Logo  ; Zhong, Qi 1   VIAFID ORCID Logo  ; Li, Ningran 2   VIAFID ORCID Logo  ; Gao, Wanxin 1   VIAFID ORCID Logo  ; Zhang, Lefeng 1 ; Gao, Longxiang 3 

 Faculty of Data Science, City University of Macau, Macau 999078, China; [email protected] (G.S.); [email protected] (M.Q.); [email protected] (W.G.); [email protected] (L.Z.) 
 School of Computer and Mathematical Sciences, The University of Adelaide, Adelaide, SA 5005, Australia; [email protected] 
 Key Laboratory of Computing Power Network and Information Security, Qilu University of Technology, Jinan 250316, China; [email protected] 
First page
1857
Publication year
2025
Publication date
2025
Publisher
MDPI AG
e-ISSN
14248220
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3181759488
Copyright
© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.